CN105241575B - Intensity based on broadband fluorescence spectrum compares temp measuring method - Google Patents
Intensity based on broadband fluorescence spectrum compares temp measuring method Download PDFInfo
- Publication number
- CN105241575B CN105241575B CN201510570466.XA CN201510570466A CN105241575B CN 105241575 B CN105241575 B CN 105241575B CN 201510570466 A CN201510570466 A CN 201510570466A CN 105241575 B CN105241575 B CN 105241575B
- Authority
- CN
- China
- Prior art keywords
- fluorescence
- spectrum
- temperature
- intensity ratio
- temp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to a kind of intensity based on broadband fluorescence spectrum than temp measuring method, the phenomenon mainly varied with temperature using the dual wavelength light strength ratio chosen on broadband fluorescence emission spectra bands of a spectrum.When this method is used for temperature survey, two suitable wavelength are selected in the wave-length coverage of the emission spectrum bands of a spectrum of specific broadband fluorescence material, calculate the fluorescent emission intensity ratio of the two wavelength, the functional relation of intensity ratio scale and temperature value is sensing equation, fluorescence intensity ratio numerical value under unknown temperatures is transducing signal, is input to sensing equation and obtains temperature value to be measured.The present invention gives a kind of new fluorescence intensity ratio temp measuring method, it is no longer confined to discrete spectral Lines luminescent spectrum of traditional fluorescence intensity ratio thermometry using a limited number of kind of rare earth ion, therefore the optional scope of fluorescence intensity ratio thermometric sensitive material is wider, and cost is lower.
Description
Technical field
The present invention relates to a kind of measuring method of temperature, specially a kind of intensity based on broadband fluorescence spectrum is than surveying
Warm method.
Background technology
Fluorescence thermometric is a kind of emerging technology of temperature sensing arts.Enter trip temperature using the temperature-sensing property of fluorescent material to pass
Typical advantages of the sense with optical measuring technique, such as electromagnetism interference, non-contact.Meanwhile the cost of fluorescence temperature measurement system is various
It is relatively low in temperature light measuring system.
Common fluorescence intensity ratio（FIR）The sensitive material that thermometry uses must possess two radiation jumps of thermal coupling
Excited level is moved, therefore, sensitive material is special line spectrum fluorescent material, is not related to the material that fluorescence spectrum is band spectrum
Material.Intensity is than in thermometry, colorimetric formula black body radiation thermometric is to be based on continuous blackbody radiation spectrum, but in low-temperature measurement
Because radiation intensity is small, precision is very low.
The present invention, which provides, a kind of is different from common fluorescence intensity ratio thermometry, the dual wavelength based on broadband fluorescence spectrum
Intensity compares temp measuring method.Same fluorescent material can provide a series of strength vs. temperature sensing equations, and with colorimetric formula black matrix spoke
Penetrating thermometry has formal uniformity, it is not necessary to changes sensor-based system construction can and is easily combined into fluorescent method
Survey low temperature, the wide-range temperature-sensing system of black body radiation technology pyrometry.In addition the fluorescent material that the present invention uses is more typical,
Cost is relatively low.
The content of the invention
It is and traditional discrete it is an object of the invention to propose a kind of intensity based on broadband fluorescence spectrum than temp measuring method
Spectral line fluorescence intensity ratio thermometry is otherwise varied so that the range of choice of temperature sensitive fluorescent material is bigger, compares type with other intensity
Or the compatibility of colorimetric formula temp measuring method is more preferable.
Technical scheme is as follows：A kind of intensity based on broadband fluorescence spectrum is than temp measuring method, including gives and close
Suitable broadband spectral fluorescent material, select effective shooting condition, suitable two wavelength are chosen in the range of spectral bands,
The emissive porwer of the two wavelength is measured in certain temperature range, the ratio of the intensity under different temperatures is asked for and is fitted that to obtain fluorescence strong
Corresponding fluorescence intensity ratio is inputted the TEMP equation by degree than TEMP equation when measuring unknown temperatures；It is special
Sign is that method and step is as follows：
Step 1: selected fluorescent material and the excitation source of matching, beam splitter, sensitive detection parts, form fluorescence temperature
Sensor-based system；
Step 2: selecting suitable two wavelength from the fluorescence spectrum of fluorescent material, their fluorescence intensity ratio is recorded,
In certain temperature range（Such as room temperature is to 450K）The temperature for changing fluorescent material is gradually set, it is strong to record described two fluorescence
The ratio variation with temperature of degree, fitting obtain fluorescence intensity ratio TEMP function；
It is not unique to sense function, chooses two monitored wavelength differences, sensing function is also different.According to sensitivity and plan
The requirement of precision is closed, optimal sensing equation can be found out and determine two monitored wavelength.
Step 3: the fluorescent material is placed under unknown temperatures environment, with the excitation in step 1, record to be measured
At a temperature of fluorescence intensity ratio described in step 2, the TEMP function substituted into step 2 obtains dut temperature.
The essence of the present invention is influenced by temperature using the spectral pattern of some fluorescence spectrums.Variation with temperature, fluorescence light
Spectrum bands of a spectrum are moved, and the change of simultaneous bands of a spectrum bandwidth, in this case, the distribution of fluorescence intensity changes, and makes
Intensity into specific wavelength fluorescence becomes therewith, and finally, the relation of fluorescence intensity ratio data and temperature forms a dullness
Function.
Fluorescent material used in the present invention has wide fluorescent band.The species of fluorescent material includes but is not limited to
The rare earth ion doped inorganic material of 5d-4f transition, broad-band illumination material, the semiconductors coupling of doped transition metal ionses light
Material, organic fluorescence materials etc..
The dual wavelength strength vs. temperature method for sensing of the present invention, it may also be used for but be not limited to fluorescence excitation spectrum, absorb light
The TEMP application of the spectrum such as spectrum, transmitted spectrum.
Beneficial effects of the present invention：The present invention has expanded the principle of fluorescence intensity ratio temp measuring method, what new method was applicable
Fluorescent material luminous efficiency is generally higher, more conventional, cost is less expensive；There is very big choosing than the wavelength of fluorescence of monitoring for intensity
Scope is selected, is easy to other intensity than type TEMP mode（Such as colorimetric method black body radiation thermometric）Combination；TEMP side
For journey in form in intensity than the linear relationship with temperature, the logarithmic formula than traditional fluorescence intensity ratio thermometry is more succinct.
Brief description of the drawings
Fig. 1 is the typical temperature sensitive broadband fluorescence spectrum of the present invention（With YAG:Ce3+Exemplified by fluorescent material）, in exciting light use
The a length of 405nm of cardiac wave laser.Spectral intensity has normalized in figure.
Fig. 2 is that the present invention selectes different wavelength Xs, the ratio variation with temperature of respective intensity I (λ).
Embodiment
The present invention technology segment describe one kind from fluorescent material band spectrum choose two wavelength, using they
Method of the intensity than measurement temperature.Specific implementation process is as follows（With fluorescent material Y AG:Ce3+Exemplified by）：
Step 1: fluorescent material is placed in controllable temperature environment, centre wavelength 405nm laser is selected as excitation source,
Fiber spectrometer by the use of a measurement range in visible light wave range, resolution ratio 0.5nm is used as detecting devices.
Step 2: setting the environment temperature for changing fluorescent material gradually in the range of room temperature to 450k, different temperatures is recorded
Under a series of fluorescence emission spectrums, as shown in Figure 1.
Select a wavelength near fluorescence Spectra peak wavelength（550nm）As reference wavelength, choose in addition and reference wave
Long interval more than 10nm other 16 wavelength locations, calculate the light at the light intensity and other 16 wavelength of reference wave strong point respectively
Strong intensity, obtain 16 groups of intensity ratio~temperature relation data.
Optimum linearity fitting is made to this 16 groups of data respectively（As shown in Figure 2）, 16 sensing equations are obtained, fitting a straight line
Slope corresponds to TEMP sensitivity.Sensitivity and fitting precision size can as select optimal sensing equation according to
According to, or according to being actually needed other two wavelength of selection, detect their fluorescence intensity ratio and fit sensing in a manner described
Equation.
Step 3: the fluorescent material being placed in unknown temperatures environment, with the excitation of the Same Wavelength fluorescence
Material, measure it fluorescence spectrum and calculation procedure two at two wavelength determining fluorescence intensity intensity ratio, substitute into corresponding
Sensing equation in obtain temperature value to be measured.Fluorescent material powder becomes temperature sensor.
Other exemplary wideband fluorescent materials that can be used for the TEMP mode also include but is not limited to：Other 5d-
The rare earth ion of 4f transition（Such as Eu2+）Doping fluorescent material, transient metal doped fluorescent material, semiconductive luminescent materials and organic
Luminescent material etc..
It is other the spectrum types of the technical scheme to be applied also to include but is not limited to：Fluorescence excitation spectrum, absorb light
Spectrum, transmitted spectrum etc..
The spectrometer of the inside of above-mentioned steps one can also have the element for selecting color, detectivity to combine replacement, example with other
Such as being isolated with colour filter needs two wavelength of monitoring intensity, measures their light intensity respectively with two semiconductor photocells,
Then TEMP curve and display observed temperature data are recorded with functional circuit.
Claims (3)
1. a kind of intensity based on broadband fluorescence spectrum is than temp measuring method, including gives suitable broadband spectral fluorescent material, choosing
Fixed effective shooting condition, suitable two wavelength are chosen in the range of spectral bands, measured in certain temperature range this two
The emissive porwer of individual wavelength, ask for the ratio of the intensity under different temperatures and be fitted to obtain fluorescence intensity ratio TEMP function, measure
Corresponding fluorescence intensity ratio is inputted into the TEMP function during unknown temperatures；It is characterized in that method and step is as follows：
Step 1: selected fluorescent material and the excitation source of matching, beam splitter, sensitive detection parts, composition fluorescence temperature sensing
System；
Step 2: selecting suitable two wavelength from the fluorescence spectrum of fluorescent material, their fluorescence intensity ratio is recorded, one
The temperature for changing fluorescent material is gradually set in the range of constant temperature degree, records the ratio of described two fluorescence intensities with the change of temperature
Change, fitting obtains fluorescence intensity ratio TEMP function；TEMP function is not unique, chooses two monitored wavelength not
Together, TEMP function is also different；
Step 3: the fluorescent material is placed under unknown temperatures environment, with the excitation in step 1, record treats testing temperature
Fluorescence intensity ratio described in lower step 2, the TEMP function substituted into step 2 obtain dut temperature.
2. a kind of intensity based on broadband fluorescence spectrum according to claim 1 compares temp measuring method, it is characterised in that：Made
Fluorescent material is the luminous material of rare earth luminescence material, transition metal luminescent material, semiconductors coupling of 5d-4f transition
Material, luminous organic material.
3. a kind of intensity based on broadband fluorescence spectrum according to claim 1 compares temp measuring method, it is characterised in that：May be used also
TEMP application for fluorescence excitation spectrum, absorption spectrum, transmitted spectrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510570466.XA CN105241575B (en) | 2015-09-10 | 2015-09-10 | Intensity based on broadband fluorescence spectrum compares temp measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510570466.XA CN105241575B (en) | 2015-09-10 | 2015-09-10 | Intensity based on broadband fluorescence spectrum compares temp measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105241575A CN105241575A (en) | 2016-01-13 |
| CN105241575B true CN105241575B (en) | 2017-11-10 |
Family
ID=55039300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510570466.XA Active CN105241575B (en) | 2015-09-10 | 2015-09-10 | Intensity based on broadband fluorescence spectrum compares temp measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105241575B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404211B (en) * | 2016-11-09 | 2018-12-25 | 哈尔滨工程大学 | A kind of up-conversion fluorescence intensity not depending on excitation light intensity compares temp measuring method |
| CN106500864B (en) * | 2016-11-09 | 2019-01-29 | 哈尔滨工程大学 | It is a kind of using high power laser light pump up-conversion fluorescence intensity compare temp measuring method |
| CN108151906A (en) * | 2016-12-02 | 2018-06-12 | 中国科学院大连化学物理研究所 | A kind of method that more absorption lines measure gas temperature |
| CN108168726B (en) * | 2016-12-08 | 2020-10-02 | 中国科学院福建物质结构研究所 | Method for measuring internal temperature of gain medium in solid laser |
| CN106908168B (en) * | 2017-02-19 | 2018-12-28 | 燕山大学 | A kind of highly sensitive temperature sensing method based on neodymium ion near-infrared fluorescent |
| CN107917767B (en) * | 2017-11-10 | 2020-06-30 | 南昌航空大学 | Method for measuring surface temperature field through fluorescence imaging |
| CN108489631B (en) * | 2018-03-09 | 2022-08-09 | 南昌航空大学 | Absorption spectrum intensity ratio temperature measurement method |
| CN108489632B (en) * | 2018-03-22 | 2019-10-22 | 哈尔滨工业大学 | A method of improving fluorescence intensity ratio technology temperature measurement accuracy |
| CN108692829B (en) * | 2018-06-27 | 2020-07-10 | 上海达琪智能科技有限公司 | Temperature demodulation method, device and system based on fluorescent optical fiber |
| CN109540326B (en) * | 2018-11-19 | 2020-11-27 | 哈尔滨工业大学 | Fluorescence intensity ratio temperature measurement method based on dual-wavelength light source |
| CN111060213B (en) * | 2020-01-17 | 2021-04-27 | 陕西师范大学 | Temperature measurement method based on rare earth ion emission fluorescence peak position movement amount |
| CN113776690A (en) * | 2021-09-16 | 2021-12-10 | 浙江大学 | End rare earth ion Sm3+Doped YAG single crystal optical fiber fluorescence temperature sensor |
| CN113932940B (en) * | 2021-09-23 | 2022-07-01 | 清华大学 | Temperature measuring method, temperature measuring device, temperature measuring sensor and computer readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8201996B1 (en) * | 2008-04-25 | 2012-06-19 | Ipitek, Inc. | Passive wavelength-division multiplexing (WDM) fiber-optic temperature sensor |
| CN102829892A (en) * | 2012-08-14 | 2012-12-19 | 厦门大学 | Temperature-sensing measurement method based on various mixed fluorescent materials |
| CN104535222A (en) * | 2015-01-22 | 2015-04-22 | 哈尔滨工业大学 | High-sensitivity temperature measurement method based on light emission characteristics of trivalent praseodymium ions |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5430191B2 (en) * | 2009-03-18 | 2014-02-26 | アズビル株式会社 | Fluorescence temperature sensor and failure determination method thereof |
| CA2786919C (en) * | 2010-04-17 | 2015-06-23 | Powell Canada Inc. | Photoluminescent temperature sensor utilizing a singular element for excitation and photodetection |
-
2015
- 2015-09-10 CN CN201510570466.XA patent/CN105241575B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8201996B1 (en) * | 2008-04-25 | 2012-06-19 | Ipitek, Inc. | Passive wavelength-division multiplexing (WDM) fiber-optic temperature sensor |
| CN102829892A (en) * | 2012-08-14 | 2012-12-19 | 厦门大学 | Temperature-sensing measurement method based on various mixed fluorescent materials |
| CN104535222A (en) * | 2015-01-22 | 2015-04-22 | 哈尔滨工业大学 | High-sensitivity temperature measurement method based on light emission characteristics of trivalent praseodymium ions |
Non-Patent Citations (3)
| Title |
|---|
| A Fiber一Optic Temperature Sensor Based on Dual Fluorescence by Using FIR Method;Du Xinchao 等;《中国激光》;20150831;第42卷(第8期);第0805002-1-0805002-9页 * |
| 基于CdSe / ZnS核壳量子点薄膜的荧光温度传感器;陈中师 等;《发光学报》;20141031;第35卷(第10期);第1215-1220页 * |
| 基于稀土掺杂光纤荧光强度比的温度传感;包玉龙 等;《光纤与电缆及其应用技术》;20100531(第5期);第1-4页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105241575A (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105241575B (en) | Intensity based on broadband fluorescence spectrum compares temp measuring method | |
| Rai | Temperature sensors and optical sensors | |
| US4215275A (en) | Optical temperature measurement technique utilizing phosphors | |
| Khalil et al. | Europium beta-diketonate temperature sensors: Effects of ligands, matrix, and concentration | |
| US4652143A (en) | Optical temperature measurement techniques | |
| CN105203041B (en) | A kind of method of broadband fluorescence integrated intensity than measuring strain | |
| CN105403548A (en) | Temperature variable spectral measurement device | |
| Fu et al. | An Eu/Tb-codoped inorganic apatite Ca5 (PO4) 3F luminescent thermometer | |
| US7513685B2 (en) | Temperature sensitive paint for an extended temperature range | |
| US6840669B2 (en) | Methods and devices for sensing temperature and another physical parameter with a single optical probe | |
| US7097354B2 (en) | Method of determining the temperature in a system comprising a molecular heater fraction and a molecular thermometer fraction | |
| CN107917767A (en) | A kind of method by fluorescence imaging measuring surface temperature field | |
| CN107941352A (en) | A kind of room temperature black matrix spoke luminance parameter calibrating installation and measuring method | |
| Abou Nada et al. | Improved measurement precision in decay time-based phosphor thermometry | |
| Liao et al. | Afterglow-intensity-ratio-based temperature sensing using a persistent phosphor | |
| US7707889B2 (en) | Method and apparatus for determination of oscillations on a rotating blade disc of a turbine | |
| McSherry et al. | Review of luminescent based fibre optic temperature sensors | |
| CN105318985B (en) | A kind of device and method by reflected light relative intensity measure body surface temperature | |
| KR970701343A (en) | FULORESCENT SPECTRAL DIFFERENTIAL MEASUREMENT OF A SUBSTRATE COATING | |
| CN109945987B (en) | Method for realizing high-sensitivity temperature measurement in higher temperature range | |
| DeRose et al. | Characterization of standard reference material 2941, uranyl-ion-doped glass, spectral correction standard for fluorescence | |
| CN108489631B (en) | Absorption spectrum intensity ratio temperature measurement method | |
| Lowe et al. | Design, construction and traceable calibration of a phosphor-based fibre-optic thermometer from 0° C to 650° C | |
| EP0913676A1 (en) | Method and apparatus for temperature measurement | |
| CN105890795A (en) | Temperature field single spectrum detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |